bug soft lockup cpu 0 stuck for 61s! [pdflush:11] nios2 used µclinux

hi for all

i have error cpu nios2 of altera , i use µclinux , when i use mu driver spi to send data , dmesg ok but after few time , it's stop runing

ans ia ahve this message

/>bug soft lockup cpu 0 stuck for 61s! [pdflush:11]

with value of register r= 0048a00 r2 ... as soon as

i don't know what's de problem